Charles Barker
27Patents
11h-index
33Co-inventors
75Inventor score
Filing activity: Jan 24, 1977 → Mar 7, 2012
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5597034A | High performance fan heatsink assembly | Electricity | 110 | Expired |
| US5175613A | Package for EMI, ESD, thermal, and mechanical shock protection of circuit chips | Electricity | 91 | Expired |
| US4728160A | Cabinet for a computer assembly | Physics | 89 | Expired |
| US5410448A | Adaptive cooling system | Electricity | 81 | Expired |
| US4866764A | Telephone | Electricity | 38 | Expired |
| US4133975A | Loudspeaker system with broad image source with directionality control for the tweeter | Electricity | 37 | Expired |
| US7688992B2 | Seat electroacoustical transducing | Electricity | 34 | Active |
| US4266092A | Loudspeaker system with broad image source | Electricity | 29 | Expired |
| US4669025A | Semiconductor junction temperature emulator | Emerging Cross-Sectional Technologies | 22 | Expired |
| US8045743B2 | Seat electroacoustical transducing | Electricity | 18 | Active |
| US7676047B2 | Electroacoustical transducing with low frequency augmenting devices | Electricity | 12 | Expired |
| US5917923A | Satellitic compact electroacoustical transducing | Electricity | 11 | Expired |
| US4154979A | Woofer efficiency | Electricity | 9 | Expired |
| US6782111B1 | Multiple voicecoil and driver transducing | Electricity | 7 | Expired |
| US7844182B2 | Optical network architecture for simultaneous transport of analog video signals and ethernet data | Electricity | 7 | Expired |
| US8139797B2 | Directional electroacoustical transducing | Electricity | 6 | Expired |
| US6816639B1 | Optically powered and controlled optical switch | Electricity | 6 | Expired |
| US6987900B2 | Optically powered optically controlled optical switch | Electricity | 5 | Expired |
| US9313482B2 | Forming spectral filters | Electricity | 4 | Active |
| US9014404B2 | Directional electroacoustical transducing | Electricity | 4 | Active |
| US8213797B2 | DWDM transport of CATV and digital signals over optical fiber in low-dispersion spectral regions | Electricity | 3 | Active |
| US8917991B2 | FTTH RF over glass (RFoG) architecture and CPE with wavelength separator | Electricity | 3 | Active |
| US7266298B2 | N-way broadcast/narrowcast optical combiner demultiplexing a multiplexed narrowcast input signal | Electricity | 2 | Expired |
| US8346081B2 | Smart RF over glass (RFoG) CPE unit with seamless PON upgrade capability | Electricity | 1 | Active |
| US7706689B2 | Forward baseband digitalization | Electricity | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.